<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style type="text/css">
            .loading{
                width: 50px;
                height: 50px;
                margin: 100px auto;
                position: relative;
            }
            .circle{
                width: 50px;
                height: 50px;
                position: absolute;
                left: 0;
                top: 0;
            }
            .small{
                width: 8px;
                height: 8px;
                border-radius: 4px;
                background-color: black;
                margin:0  auto;
                animation: loading linear;
            }
            @keyframes loading{
                from{
                    opacity: 1;
                }
                to{
                    opacity: 0.1;
                }
            }

            .loading .circle:nth-child(1){
                transform: rotate(0deg);
                animation: loading 0.9s infinite 0s;
            }
            .loading .circle:nth-child(2){
                transform: rotate(45deg);
                animation: loading 0.9s infinite 0.1s;
            }
            .loading .circle:nth-child(3){
                transform: rotate(90deg);
                animation: loading 0.9s infinite 0.2s;
            }
            .loading .circle:nth-child(4){
                transform: rotate(135deg);
                animation: loading 0.9s infinite 0.3s;
            }
            .loading .circle:nth-child(5){
                transform: rotate(180deg);
                animation: loading 0.9s infinite 0.4s;
            }
            .loading .circle:nth-child(6){
                transform: rotate(225deg);
                animation: loading 0.9s infinite 0.5s;
            }
            .loading .circle:nth-child(7){
                transform: rotate(270deg);
                animation: loading 0.9s infinite 0.6s;
            }
            .loading .circle:nth-child(8){
                transform: rotate(315deg);
                animation: loading 0.9s infinite 0.7s;
            }
        </style>
    </head>
    <body>
        <div class="loading">
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            <div class="circle">
            <div class="small"></div>
            </div>
            
        </div>
    </body>
</html>